Home / 21,612.30-29,824.11-12,182.82

Finding the Fourth Proportional to 21,612.30, 29,824.11 and 12,182.82

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Solution

The fourth proportional to 21,612.30, 29,824.11 and 12,182.82 is: 16,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.30 : 29,824.11 = 12,182.82 : x
  2. Step 2: Convert to fraction form
    21,612.30/29,824.11 = 12,182.82/x
  3. Step 3: Cross multiply
    21,612.30x = 29,824.11 × 12,182.82
  4. Step 4: Simplify right side
    21,612.30x = 363,341,763.79
  5. Step 5: Solve for x
    x = 363,341,763.79/21,612.30
  6. Step 6: Final answer
    x = 16,811.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.